REDDIT · REDDIT// 24d agoOPENSOURCE RELEASE

Portable Mind Format defines agent identity

Portable Mind Format (PMF) is an MIT-licensed open-source JSON specification for defining AI agents in a provider-agnostic way, with fields for identity, voice, values, knowledge, skills, and security. The repo ships 15 production agents, a schema validator, and converters for Claude Code, Cursor, GitHub Copilot, and Gemini CLI, so the same agent definition can be adapted across model ecosystems without rewriting the core persona. Its core idea is that a prompt says what to do, while PMF defines who the agent is.

// ANALYSIS

Hot take: PMF is most interesting as a portability standard for agent identity, not as another agent framework.

–Strongest angle is separation of persona from runtime, which makes agents easier to version, audit, and move between providers.
–The repo’s converter support lowers adoption friction for developer tooling, especially Claude Code and the other IDE/CLI targets.
–The “15 production agents” claim gives it real-world credibility, but the runtime dependency still lives elsewhere, so PMF is best seen as the spec layer.
–Best fit: teams that want reusable agent personas more than orchestration, memory, or execution infrastructure.

// TAGS

agentjsonprovider-agnosticopen-sourceclaude-codecursorgemini-cliollama

DISCOVERED

24d ago

2026-03-19

PUBLISHED

24d ago

2026-03-18

RELEVANCE

8/ 10

AUTHOR

SUTRA108